The Guide was for the lvl 46 cap I believe.
The 51 cap pvp is a little more complicated now.
Take in consideration that all the players have had to adapt to the Mana regen implants, the Health regen weapons available and the extra practice ops have had to do to keep up.
I've had to go a different route in my PvP techniques to adapt to the lvl of skill one plays an op now compared to the 46 cap, same with coms with their H/S regen and balancing out with either a more crit/mana drain or less crit/mana regen approach. Choosing one or the other can be the diffence between winning or loosing to any battle now ;-)